Fixed drivetrain direction.

Change-Id: I7312cb3a79a52c6f79b1b26f0515c05142e2949e
diff --git a/frc971/wpilib/wpilib_interface.cc b/frc971/wpilib/wpilib_interface.cc
index 6a7d860..689ca85 100644
--- a/frc971/wpilib/wpilib_interface.cc
+++ b/frc971/wpilib/wpilib_interface.cc
@@ -256,9 +256,9 @@
     {
       auto drivetrain_message = drivetrain_queue.position.MakeMessage();
       drivetrain_message->right_encoder =
-          drivetrain_translate(right_encoder_->GetRaw());
+          -drivetrain_translate(right_encoder_->GetRaw());
       drivetrain_message->left_encoder =
-          -drivetrain_translate(left_encoder_->GetRaw());
+          drivetrain_translate(left_encoder_->GetRaw());
 
       drivetrain_message.Send();
     }